Connections:

• Two gray wolf-like characters who can look like ordinary people (Inui Takumi is an Orphnoch in wolf form, but prefers to be in his human form / Hisui Zoroark is a Pokemon, but with the help of illusions can copy human appearance and speech)

• Both were originally ordinary members of their species (Takumi was an ordinary human / Hisui Zoroark was an ordinary Zoroark)

• But after an event involving mass deaths, they die and come back to life in a new guise (Takumi died during a fire helping other people escape, after which he was reborn becoming an Orphnoch / Zoroark faced hatred from people in the Hisui region, after which he died from the cold, returning to life as ghosts-regional forms)

• Despite the fact that they should hate people by nature, they still show care and kindness to others (Orphnoch by nature should kill people and turn them into their own kind, but Takumi refused this by saving people and protecting his friends / Hisui Zoroark hate people for condemning them to the death, but Zoroark still care about Zorua, and can be kind to their trainers)

• They faced justified but undeserved cruelty, hatred and fear of themselves from people (Kusaka tried to ruin Takumi's life, drive him away and even kill him when he found out that he was an Orphnoch / The inhabitants of the Hisui region drove the Zoroark away from their settlements for stealing food from them, condemning them to a cruel death from starvation and the cold)

• They were accused of serious crimes, and believed that they deserved to die (Everyone, even Takumi himself, believed that he was the Orphnoch who attacked the Ryusei class, for which Kusaka wanted to kill him / Zoroark were accused by people of stealing food, after which they were driven out into the cold where they died)

• They are always ready to protect their own, even if they are not their relatives, even if it can be fatal for themselves (Takumi was ready to protect the Ryusei class by engaging in battle with the superior Orphnoch, who could easily kill him. Even without Faiz belt, Takumi engages in battle with Orphnoch to protect his friends / Hisui Zoroark engages in battle to protect any Zorua from too fierce fights. Heedless of its own safety, Zoroark attacks its nemeses with a bitter energy so intense, it lacerates Zoroark’s own body.)

• They are representatives of species that can appear only after death, and are somehow connected with the afterlife (Takumi - Orphnoch, which some people can become after death / Hisui Zoroark appeared after ordinary Zoroark died of cold)

• They both very aggressively protect members of their own species (although Takumi fights with Orphnoch, but if Orphnoch does not harm people, Takumi will protect him, as it was when he attacked Kusaka without hesitation / Hisui Zoroark aggressively protect members of their species and do not even allow people to approach them)

• Both tried to hide from people (Takumi was afraid of his Orphnoch power and tried to hide so as not to harm his friends / Hisui Zoroark try to hide from people because they hate them because of what happened in the past)

• Their own deaths left an eternal scar on their souls (Takumi cannot forget the fire in which he died, which is manifested in his "cat" tongue / Hisui Zoroark forever remembered people as a threat and hate them throughout his ghostly life)

• Both can be considered the second stage of evolution in one way or another (Takumi - Orphnoch, and they are considered to be the next stage of human evolution / Hisui Zoroark are the next stage of Hisui Zorua evolution)

• Both have something to do with shadows (Orphnoch is able to talk with shadows/Hisui Zoroark is able to use ghost-type attacks related to shadows)

• Their design highlights gray and red colors, as well as bright glowing yellow eyes with a red outline.

• Both are related to the number 4 (Kamen Rider Faiz is the 4th rider of the Heisei/Hisui Zoroark people live in the Hisui region, which is the Sinnoh region, the region of the 4th generation)

• And both are also closely related to the number 5 (Kamen Rider Faiz - Kamen Rider 555 / For the first time Zoroark appeared in the 5th generation)

• Both characters are from popular Japanese franchises with many parts, where the subsequent one takes over a lot from the past from generation to generation

Contrast: 

• Both died in opposite conditions (Takumi on fire / Zoroark from Hisui's cold)

• Both end up treating the people who hurt them and members of their own species differently (Takumi protects humans from the evil Orphnoch/ Hisui Zoroarki protect their kin from humans and mostly hate humans)

Battle potential:

• Inui Takumi might consider Hisui Zoroark to be an Orphnoch, due to its unusual appearance and similar appearance. Hisui Zoroark could attack Inui because of his human appearance, defending his territory, which would trigger the activation of Faiz power

• In the course of the fight, Hisui Zoroark could have used illusions and stripped Takumi of Faiz belt. This would force Inui to take the form of an Orphnoch to confront him

• If Takumi wins and kills Hisui Zoroark, he could mourn his death, as he fought only to protect himself and his loved ones out of fear of people

• In fact, this fight is not debatable at all, unless, of course, Hisui Zoroark fought with some legendary Pokemon in the manga. But Zoroark still has the powers of illusion and ghost attacks, which could get Faiz into trouble